APA Style
      Editor, Grimes, Barbara F.. (s.a.).
    Ethnologue language of the world .
    Texas:
  Summer Institute of Linguistic.
  
Chicago Style
      Editor, Grimes, Barbara F..
    Ethnologue language of the world.
    
    Texas:
  Summer Institute of Linguistic,
  s.a..
  Text.
  
MLA Style
      Editor, Grimes, Barbara F..
    Ethnologue language of the world.
    
    Texas:
  Summer Institute of Linguistic,
  s.a..
  Text.
  
Turabian Style
      Editor, Grimes, Barbara F..
    Ethnologue language of the world.
     
    Texas:
  Summer Institute of Linguistic,
  s.a..
  Print.